# Basic syntax:
install.packages("package_you_want")
# To then use the package in R, you need to run:
library(package_you_want)
# Note, when you install a package, the package name has to be in quotes
# but when you load it, it shouldn't be
# If your package isn't in the main CRAN repositry (which is rare), use:
install.packages("package_you_want", "https://other.repo.url.com")
# Where there other repo URL is the base URL of the other repository
install.packages("mypackage.tar.gz",type="source",dependencies=TRUE,repos="http://a.cran.mirror")
#install (if not already installed) and load tseries package
if(!require(packageName)){install.packages('packageName')} else{library(packageName)}
install.packages(file.choose(), repos = NULL)